Engine-lathe



4 Sheets-Sheet 1.

(No Model.)

ENGINE LATHE.

No. 325,662. Patented Sept. 8, 1885.

y WITNBSSBS MWC/Z 4 Sheets-Sheet 2.

(No Model.)

v. H. ERNST.

l ENGINE LATHE.

Nv PETERS. Phemumoguphm, washington. D. C,

4 Sheets-Sheet 3.

(No Model.)

V.E. ERNST.

ENGINE LATHE.

No. 325,662. Patented Sept. 8, 1885.

INVENTOR N. PETERS, Pham-Lnhognpfhnr, wasmngmn. D. C.

4 ml S .N Dm. E H V ENGINE LATER.

Patented Sept. 8, 1885.

WTNESSES: m

@UKA

INVENTOR N. PETERS, Phnm-Lnhgnpher, wnshingion. ILC,

NITED STATES PATENT Crricn.

VICTOR H. ERNST, OF JERSEY CITY, NEWT JERSEY.

ENGINE-LATHE.

G'PECTPICATION forming part of Letters Patent No, 325,662, dated September 8, 1885.

(No model.)

To @ZZ whom, it 11i/ary concern,.- f

Be it known that I, VICTOR H. ERNST, of Jersey City, in the county of Hudson and State of New Jersey, have invented a new and Improved Engine-Lathe, of which the following is a full, clear, and exact description.

Reference is to be had to the accompanying drawings, forming apart of this spccieation, in which similar letters of reference indicate corresponding parts in all the figures.

Figure 1, Sheet 1, is a front elevation, parts being broken away, of an engine-lathe embodying my improvements. Fig. 2, Sheet 2, is a sectional elevation of l[he carriage and yoke, showing the internal arrangement of the carriagei'ccd mechanism and devices for operating the swivel of the compound rest. Fig. 3, Sheet 3, is an end elevation, part being broken away, showing the devices for telescoping the feed-rod drivingsleeve on thc feed-rod. Fig. 4 is an end elevation of the head-stock, part broken away, showing the devices for reversing the feed-rod and also the lead-screw. Fig. 5 is an end view of the oiiisct Vfoot-stock, showing also the hand-wheel for turning the lcadscrew. Fig. 6 is a side elevation, partly sectional, showing the annular rack on the ielescoping sleeve and the pinion and feedrod. Fig. 7 is an end eleva tion, partly sectional, showing the devices for operating the twopart nut. Fig. 8 is an end view, partly sectional, of the carriage and the 'wheels and devices for operating the crossfeed. Fig. 9 is a plan view ofthe same, part being broken away. Fig. l0 is a front elevation of the carriage-apron, showing the independent cross-feed gearingand eccentric devices for throwing the cross-feed'in and out of connection with the feed-rod and cross-feed screw. Fig. 11 is a front view of the adjustable stop for the cross-feed shifting mechanism to limit the mesh of the connectingY gearwheels. Fig. 12, Sheet tl, is a plan view of the compound rest, carriagcsaddle, and lathe! bed, parts being broken out and others broken away, and also showing the carriage-apron on the irregular line a: x x .fr fr m of Fig. 13, AeX- posing the arrangement of feed-rod-driving mechanism for and connection of the cross feed-screw. Fig. 13is an enlarged front e.e-

vation, part broken out, showing the wheels and eccentric device and intermediate gearwhcel for connecting and disconnecting at one and the sametimcthe intermediate gear-wheel from the cross-feedscrew gear-wheel and the `fecd-rod` gear-wheels, showing, also, the carriage-rod feed-driving sleeves and shaft in section on thc linea x' of Fig. 2. Fi. 14 is a sectional end elevation of the head stock hearing, showing the oil-distributing grooves and cleaningaperture on the line y y of Fig. 15. Fig. 15, Sheet 4, is a sectional side elevation of the same, but showing the full length ofthe bearing, taken on the line z z of Fig. 14.

Ais the hed; B, the head-stock; C, the footstock, and D the lathe-carriage.

The bed A is mounted upon pillars or pedestals A2. The hed A is cast hollow, of semicylindrical form, with iiat top, and arranged with a longitudinal opening extending along the front for introduction of the half-nut, in which to move and connect the lead-screw a. The ways are formed at thc outer edges of the flat top, tapering downward and outward at an angle of about thirty degrees. On the top of the bed one or more longitudinal grooves, c, are formed to break surface on either side of a central T-slot, which grooves may extend the entire length of the bed.

Upon the bed A is mounted the saddle D', arranged with overlapping ribs A, which take on the angling ways A5 of the bed A. On each side of the saddle D are formed recesses or pockets A to allow movement of the carriage a short distance past the rear end of the head-stock and the vfoot-stock to give the lathe-carriage a greater range. The apron E of the carriage D is secured to the saddle D in a recess, E", by screws E3. The front of the yoke W is secured to the apron E of the carriage D in a recess, w, by screws w'. The back ot the yoke XV is secured to the back of the saddle D' in a recess, V, by screws XW. The .yoke W is oi' rounded form, arranged to extend downward hack of the bed A, lapping round but not touching it, curved inward across the bottom of the hed, and connecting with the apron D at w, leaving aspace hetween the bed A and the yoke W' at about the middle lower part of the yoke. In it is formed a downwardly projecting rib, X', ranging IOG . is placed a disk, Q,

longitudinally or parallel to the bed. In the rib X a recess or pocket, X4, is formed, which may extend throughout the rib. /In the recess or pocket thus formed a truck or frame, X, for steadying ,the carriage in its movements on the bed, is placed, arranged with rollers Z, mounted in suitable bearings in pockets Z. The said truck or frame has overlapping lugs y y2, taking on the outer side edges of the rib X of the yoke WV, to retain the truck in place when moving the lathe-carriage.

On the truck or frame X shoulders y y are provided, thereby forming a depression .or

recess. In this recess a bow-spring, X3, is passed; or a spring of other suitable form may be used. In a tappet-hole arranged about midway in bottom of rib X a screw, X2, is screwed, which may be a thumb screw, wherebythe pressure of the roller-truck on the bed A is increased or decreased, and the sensitiveness of the lathe-carriage is regulated. The roller-truck moves on a flat surface formed on the under side of the bed A.

In one end of the rib X of the yoke WV a cam-fastening, Y, is arranged, which takes on one end of truck X, beneath the truck, under or near one roller, Z. When using the crossfeed, or at other times, the carriage can be rigidly locked by turning the cam Y.

In the apron E of the carriage D is screwed the screw sleeve E in a central orifice extending throughout the length of thescrew-slceve, in which is passed, to turn freely therein, the sleeve F, terminating at its inner end in a worm-wheel, P, which is adjacent to the inner face of the apron D. With the worm-wheel I) meshes the worin-pinion P2. The wormpinion is mounted on the feed-rod b, between boxes b2, and is arranged with a key to take in a spline in the feed-rod and to slide thereon.

In the face of the worm-wheel P is formed a circular central tapering orifice.' Within the orifice is placed-a friction-disk, S, of like tapering form. The said disk is mounted upon a shaft, I, and kept from turning by a key in a spline, R, but free to move a short distance on the shaft. rlhe tapering orifice in the worm-wheel I) is arranged to extend b'elow aud forms a space or cavity immediately beneath the friction-disk S, and in this space of felt or like absorbing oil which may work out the sleeves and shafts F material, to take -up from the bearings of G I, and to prevent oil from working into and between the friction f1 disk and its bearing. This effeetually prevents the friction-disk from sticking and be'coming gummed up. 'Atthe bottom of the tapering orifice in the wormwheel I?, starting immediately therefrom, is formed a rounded annular recess or shouldered pocket, P', ending in av reduced central orifice` or hole which extends outward throughout the sleeve F, thereby forming a bearing. Into the said bearing is passed a sleeve, G, turning freely therein, and whichsleeve extends through the sleeve F, and beyond the screwsleeve E a disk, H, is passed upon the sleeve G and turns against the face of the screw-sleeve E. The sleeveGis reduced slightly in diameter, thereby formingashoulder-bearing. Upon this bearing against the shoulder is tightly placed the hand-wheel H, the hub H2 of which is in contact with the disk H', so that by turning the hand-wheel the carriage is moved. By this arrangement the frictional resistance is reduced between the screw-sleeve E and the hub H'l of the hand-wheel H. The handwheel is kept from turning on the sleeve G by a key and spline, G.

Upon the threaded end of the sleeve G is secured annt or screwsleeve, K, to retain the hand-wheel H. The sleeve G at its inner end is formed with an enlarged head, Q', which takes in the pocket or recess Pvto retain the sleeve in the sleevel F in proper operative position.

In a central orifice extending throughout the sleeve G is passed a shaft, I, arranged to have a sliding movement within the sleeve and kept from turning by a key or spline or otheranalogonsdevice. Upontheinnerendof the shaft I is formed or to it is attached a gearwheel, U, engaging the rack V, and within the opposite end of the shaft I is formed a tapped hole, and into the tapped holeis screwed the screw J, having theshoulder-head j', which shoulder-head bears against the inner face of the screw-sleeve K. In a suitable hole varranged in the sleeve K, in'whic'h is passed the bearing j of screw J, near the outer endl of the screw J, a shoulder-bearing, ji, is formed. Upon the shoulder-bearingfis rigidly mounted the thumbpieee or but-ton L, adjustably held in place by a nut, M, screwed upon the threaded end of the screw J. In a hole arranged near the outer edge of the thumb-piece or button L is passed the stop or pin N, and in the screw sleeve K is rigidly passed ina suitable hole the stop or IOO pins N and O project past each other and are arranged eircumferentially in line with each other to limit the movement of the thumbpiece or button L in tightening and loosening the friction feed device herein described, and whereby the sliding movement of the shaft I with gearwheel U is controlled. The friction device may be adjusted to tighten and hold' more or less rigidly, as may be desired, by moving the thumb-piece or button L upon the bearing j". of the screw J. rlhe friction-disk.

S is arranged to have a sliding movement on A Y the shaft I, so that the disk S cannot drag or friction against the face of rack V.

The saddle D opening or hole, 4 E, which extends within a is arranged with an enlarged short distance of the rear end of the saddle.,V i (See Fig. 2.) In a thread tapped in the hole a at the outer end is secured a sleeve, 1 A. In a suitable bearing formed in the sleeve is mounted the shaft 2 of the screw 2 B.

In one edger of the dovetail rib 7 H of thesaddle Dfa transverse opening orgroove, 3 C, is formed extending into and of same length as hole 4 E. The

' jecting upward through the slide D2.

cavities 4 E and 8 C thus formed serve as a space for the nut D7 to travel in, and the upper part of thesaddle acts as a cover to protect the screw 2 B from chips and other particles. The nut D7 is mounted on screw 2 B. The shank of nut D7 is secured in a recess, u, by screws arranged on one bottom edge of slide D.

The saddle D is provided with a circular baseplate, 6 G, arranged on its under side a short distance from the edge with an annular beveled groove or recess in which takes an annular project-ion, Dl, of like form, arranged on the face of the raised circular hub of the slide D2. The raised hub may be graduated into degrees to set the compound rest at any desired angle. The circular plate `6 G ofthe swivel-saddle D4 is arranged with a downwardly-projecting swivel-stud, 5 F, having a threaded end, which stud takes in a suitable bearing formed through the hub of and in slide D2.

In a suitable cavity provided in the bottom of slide D2, a nutggeanwheel, D", is arranged to screw on the threaded end of swivel-stud 5 F. In a second cavity, formed in the under side of slide D2, arranged to break through and to communicate with first-named wheelcavity, a smaller wheel, D", is arranged to turn freely, the teeth of which mesh into the teeth of nut gear-wheel DS. The gear-wheel D9 is provided with a bearing-stud, D3, pro- The projecting end of the stud is squared for a wrench or handle whereby the compound rest may be fastened or unfastened by operation of geal-wheel D and nut gear-wheel DS.

Mounted on the saddle D4 is the tool-post slide D5, arranged with the usual gib and T-slot. lu the T-slot is mounted adjustably the tool-post Dl, arranged with an offset set'- screw, D. To give the tool or cutter a hold nearer to point of strain on the cutting-edge, the tool post is provided with a threaded sleeve, nut, and disk for raising and lowering the tool.

In the saddle D is formed a cavity, 8 I, connected with a longitudinal opening, 9 J. (See Figs. 1 and 2.) In afthread tapped in the outer end of cavity 8 I is screwed a sleeve, 1l, and in a suitable bearing in the sleeve is mounted the shaft end of screw 12, and mounted on screw 12 is nut D, the shank or leaf end of which is secured in a recess, 14,by screws in the under side edge of tool-post slide D5. Mounted on the outer end of screw 12 is a suitable crank-handle, N2.

In the saddle D,adjoining the end of screw* sleeve 1 A a downwardly-opening recess, 24, is formed. In the recess is rigidly mounted, on shaft 2 of screw 2 B, a gear-wheel, 7, and in the apron E is secured thestud 15 by anut or otherwise. The stud 15 has on its inner end an inwardly-projecting short shaft, and V upon the shaft is mounted to turn freely the bevel-Wheel 4: and gear-wheel 5, which bevelwheel and gcanwheel are made in one piece and retained by a nut screwed on the stud, or the wheels may be made in two parts, secured together by screws or otherwise, so the Wheels will turn as one wheel, or drive together.

In the apron E,in a suitable bearing,a short shaft or stud, 9, is mounted, and upon the inner end ot' stud 9 a disk, 16, is formed, or, to it is attached. Upon the face, near one edge of disk 16, is formed or to it is attached an eccentric stud-bearing, 10, and upon the bearing is loosely mounted a gear-wheel, 6, retained in place by a nut, screw, or otherwise.. Upon the projecting outer end of shaft 9 is arranged a handle or thumb piece, 1, whereby the eccentric device 9 10 16, and the Wheel 6, are moved, and the gear-wheel 6 can loe simultaneously thrown into gear with 'o r disconnected from gear-wheel 5 and gearwheel 7, leaving the intermediate gear-wheel, 6, without motion.

Stops 17 and 1S are arranged so the gearing 5 6 7 will not mesh too deep, and the wear can be allowed for by adjusting a screw, 19, ar-

ranged in the stop. The stop 17 is rigidly mounted en the short shaft or stud 9 on the front face of apron E of lathe-carriage D, and the adjustable stop 18 is secured on apron E by a screw, so it will have frictional contact to hold it in any position turned. A suitable Aspring can be used, if desired, to give additional friction.

The bevel-wheel 8 is mounted to slide on and turn with the feed-rod b, and is secured revolubl y in a bracket bearing or box, 25, at-

ytached to the inner face of apron E of carriage D. The bevel-wheel 3 is arranged with a feather or key which takes in the spline or way in the feed-rod b, so the bevel-wheel 3 is turned by the revolutions of the feed-rod b.

`The crossefeed mechanism, if desired, can be geared in a similar way as the lead-screw mechanism, to cut scrolls of any desired pitch, lby arranging the wheels on feed-rod and stud to give the desired pitch, or when desired to use the carriage-feed in combination with the cross-feed to turn curved work of various radii, the two mechanisms can be operated simultaneously.

Each half of the loclenut T T is constructed in L-form, with a dovetail foot or base on each half-section, and arranged to have an opening and closing movement in a dovetail vertical bearing formed in the apron E'of carriage D. One side of the dovctal bearing is provided with a dovctail clamp-shoe, 23, and screws to take up wear. Each half vot' the nut T T on the dovetail foot-pieces is arranged with a transverse recess or slof, 20, in the l'ace of the dovetail foot-piece.

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Upon the outer face of the apron E are arupon the end of the said shafts are formed or to them are attached eccentric studs 2]., which project into thev transverse recess 20 of the dovetail foot-piece of the L-shaped two-part nut T T.

One of the gear-wheels is formed -with or to it is attached an outwardly-proj ecting sh ort shaft or stud, upon which is mounted a thumb piece or handle, T3, arranged with a spline and key to prevent the thumb-piece or handle from turning on the shaft, but free to have a slight sliding movement. Upon a thread formed on the outer end of the shaft is screwed a thumb-nut or button, 22. By tightening or loosening the thumb-nut 22 the nut T T. can be opened or closed on the lead-screw a by the thumb-piece or handle T3, and rigidly held in locked or unlocked position.

Upon the outer face of apron E of carriage D is secured by screws a cap or cover, T, to retain the gear-wheels T and T2, or the gearwheels may be arranged on the inner side of apron E immediately beneath the dovetail L- formed pieces of the lock-nut. (See Fig. 9.)

The lathe-bed A is arranged with a tapped hole in each end, ashort distance from the front and bottom edge and in line with each other. Into the tapped holes are screwed the sleeves a2 and a, and in suitable bearings formed in the sleeves is mounted the leadscrew a. Thus arranged the lead-screw is covered and protected from chips and other particles. On the outer end of the lead-screw adjoining sleeve a, on a shoulder-bearing, is mounted the hand-wheel c, secured by a nut screwed on the threaded outer end of theleadscrew, whereby when thelead-screw is geared to a slow pitch, and the lathe cannot be` run by power on account of the danger of breaking the gear-wheels and other parts, the leadscrew can be operated or turned by thehandwheel c.

At one end, in front ofthe bed A at the top and near the base of head-stock, is secured by screws the bracket sleeve e.

In a suitable bearing formed in the bracketsleeve e is mounted to turn freely and to have a sliding movement the telescopic sleeve (l. The sleeve d has arranged on its inner end an enlarged shouldered head, di, having a hole extending about half lthedepth of the sleeve (Z.

Supported to slide in the hole or bearing is the, feed-rod b. The rod b extends into the hole about half its depth.

In the shoulder-head d is arranged a key or feather which takes in the spline or way of the feed-rod b, so that in driving, the sleeve d and feed-rod b will drive as one. The sleeve d is provided with the usual gear-wheel bearing, as d5, and with asuitablc thumb-nut.

rlhe feed-rod b is supported at its opposite end to turn freely in a bracket, b, which bracket b is secured to the bed A by screws or bolts. The feed-rod b is arranged with a shoulder-bearing in the bracket b. Upon the shoulder-bearing are mounted disks b2, one on each side of bracket b', and upon the threaded outer end of feed -rod b is screwed a nut, b3, to retain the feed-rod and preventl lateralmovement thereof.

About midway of the telescopic sleeve d is formed an annular rack, d", with which engages a pinion, f, arranged in a counterbored cavity. The pinion is on the upper rear side of and opening into the bearing of bracketsleeve e, and is covered thereby and turns freely therein. The pinion is provided with an outwardly projecting shoulder bearing study or short shaft, f', arranged to receive a handle or thumb-piece, g. The shaftf projects a short distance beyond handle tr/,and upon the projecting end a screw is formed,` upon which thread is Vscrewed athuinb-nut, lz,

whereby the pinion f can be fastened in anyA position. The handle g is provided with a key or feather (not shown) which takes in a spline in shaft f of pinion f, and which key prevents the handle g from turning on shaft f', but it is free to have a short slidingV movement on the shaft to fasten the pinion f in the counter-bored hole in the bracket-sleeve e by nut h.

Vhcn it is desired to use a gear-wheel of large diameter on the lead-screw a, the sleeve d can be telescoped on feed-rod b by turning pinion f with handle g, and locking or fastening the sleeve d in the desired position by thumb-nut h. The usual adjustable intermediate connecting-yoke, as i, is provided, having a movable stud, as i.

The head-stock B is fastened to the lathebed by a cam-bolt or other suitable device. The head-stock is constructed with hardened anti-friction bearings B2, arranged with annular grooves near the inner andouter ends of the bearings. A rightand a lett spiral or reverse groove,b5,connects with each annular groove A hole is arranged in the bearingboss of front and back standard of head-stock B, to extend through one side of the boss in front and into the bearing Bl2 near the bottom to meet the annular groove, preferably at the inner annular groove, B5, of each bearing, whereby gritty or other particles which have been introduced by oil or otherwise can be removed or run out of the hole. tapped at its outer end, and a screw-plug or screw, B, is screwed in to close the opening. The spiral cross-grooves b5 distribute the oil continuously and evenly over the spindle B and reduce liability of cutting, and the end grooves, B, tend to remove the grit or Vfloating particles. The lathe-spindle B is made hollow and arranged for a spring-chuck system operated by a draw-in spindle or otherwise. The center Bl'is held in a blank chuck, B8, and not driven into the lathe-spindle, thereby insuring truth of center and preyenting harm to lathe-spindle incident to a center, which takes direct in the spindle and is driven therein, or thek center and chuck may be formed in one piece.

In the rear standard of the head-stock,about midway of the height,is formed a tappedhole,

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The hole is into which is screwed a sleeve, p', projecting a short distance beyond the inner face of the rear standard of the headstock. On a shoulder formed on the inner projecting end is mounted to have a free movement a yoke, p. In a bearing formed in the sleeve p is mounted ashort shaft, p2. On the inner end of the shaft is formed a shoulder bearing. Upon the shoulder-bearing is rigidly mounted a gearwheel, p, having a short hub or collar which takes against or on the face of yoke p to steady the yoke. On the threaded inner end of the shaft is screwed anut, 26, to retain gear-whee p4 rigidly in place. v

In the rear under side of the head-stockmear the end, and to register with the yoke p, is formed a transverse recess, jl, in which recess is arranged to slide an -I -formed knucklejoint bar, j, having an upwardly-projecting arm or lug, j, which arm has a tapped hole near its upper end, in which takes a shifting screw, Z. In an outwardly-projecting boss, o, of the head-stock B, is formed a tapped hole. A sleeve, o', is screwed into the tapped hole'. Mounted in a bearing in the sleeve o is the shaft Z of screw Z. A shoulder -bearing is formed on the projecting end of shaft Z of screw Z. Mounted thereon to have a sliding movement is a ball-lever or other handle, m, arranged with a spline and key, (not shown,) so the screw Z will be turned by handlem. On the outer end of shaft Z is formed ascrew, and thereon is screwed a thumb-nut or button, n.

Upon the upper edge of bar j near its middle is formed a knuckle, 7c. In the downwardly-proj ecting arm of yoke p, in the rounded end thereof, is formed a rounded transverse recess or opening, k,in which takes the knuckle .7c of bar j.

Upon the upper outer rounded corners of the yoke p, a short distance from the edge, are mounted, on short shafts or studs, two gear-wheels, p5, one on either side of yoke p, the teeth of which gear-wheels mesh with gear-wheel Bm.

When it is desired to change the travel of feed-rod or lead-screw from right to left or left to right, the screw Z is turned by handle m, causing the knncklejoint bar j k j2 to move the yoke, thereby throwing one or the other of .gear-wheels pfin connection with gear-wheel B whichever direction Athe feed-rod or leadsoresT is desired to turn. A stop is provided on the yoke p on either side at o2 arranged to act on either side of head-stock on rear part of pulley-throat. The knnckleljoint bar may 'have a popspring catch or other stop for middle point when both gear-wheels 12" are out of gear or at rest.

The foot-stock C is mounted on bed A, and has overlapping downwardly-tapering ribs whichvtake on the bevel/top side or ways of the lathe-bed. The foot-stock is constructed to offset to one side at the rear, so that in setting the compound rest to turn angles the 'handle or crank N2 will have space to turn freely, and the operator can turn the crank without striking the foot-stock. The set-over of the foot-stock is arranged with a dovetail slide without gib to insure rigidity, and the foot-stock base is divided or split vertically from front to rear,and beneath the dovetail slide C5, about halfway the height of footstock, to forni a springelamping jaw, C?. A clampingscrew, G2, is arranged in the jaw C7, the threaded end of which screw takes in the foot-stock frame. Alug or stop, 0*, is rigidly i secured or screwed into the `bottom of slide G5, `passed in from the under side of the foot stock. Two set-screws, fc, are arranged in the foot-stock at front and rear which take on st0p lug C4.

When it is desired to set the center of foot stock to one side, the clamping-screw C2 is unfastened, the center slide, C,adjusted to the desired side by screws x.' Then the binding screw C2 is tightened, thereby tightening the spring-clamp jaw C7 against the side of dovetail slide C5, rigidly securing the dovetail setover thereby.

The foot-stock is secured to the lathebed by a camstud, C3, and the bolt C6, which bolt takes in a T-slot of the lathebed, and in the base of the foot-stock the cam-stud C6 is arranged a short distance above the lathe-bed, with a permanent lever for operation thereof.

Having thus fully described my invention, I claim as new, and desire to secure by Letters Patent- 1. In an engine-lathe, the combination, with the lathe-carriage apron, of a revoluble sleeve carrying a worm-wheel, a friction device arranged in the worm-wheel, a headed sleeve mounted revolubly in the wornrwheel sleeve, a hand-wheel mounted on the headed sleeve, and a shaft having a geanwheel, which shaft is mounted to slide in the headed sleeve, substantially as shown and described.

2. In an engine-lathe, the eombinatiomwith the carriageapron, of a revoluble sleeve having a worn1-whcel, a friction device arranged in the worm-wheel, a headed sleeve mounted revolubly in the worm-wheel sleeve, a crank or hand-wheel secured to the headed sleeve, a shaft mounted to slide in the headed sleeve and carrying a gear-whcel, and means for connecting the headed sleeve and sliding shaft, substantially as set forth.

l3. In an engine-lathe, the combination, with the carriageapron, of a revoluble sleeve having a worin-wheel, the sleeve G, wheel H, the disk S, the sliding shaft I, having a gear-wheel meshing with a rack, and devices for holding and means for limiting the movement of the sliding shaft, substantially as herein shown and described, whereby the friction-disk is kept from crowding against the rack, as set forth.

4. The combination, with the worm-wheel sleeve and worin-wheels, sleeve G, wheel H, and screw-sleeve K, friction-disk S, shaft I, and wheel U, of the disk Q of absorbent ma terial, substantially as shown and described, whereby the oil will be absorbed and retained IOO IIO

. Wheel DB, and the gear-wheel D,

from Working into and between the friction f with or out of gear from the gear-Wheels 5 and device, as set forth.

5. The combination of apron E, provided with sleeve E', the revoluble sleeve F, having Worm-wheel I), the headed sleeve G, provided with disk H', the Wheel H, screw-sleeve K,l the sliding shaft I, having gear-wheel U, the

screw J, shaft I, the button L, adjustably mounted on screw J, and devices, substantially as shown and described, for limiting lthe sliding movement of shaft I, and for adjusting and stopping the screw J, as set forth.

6. In combination with headed sleeve G, l the disk H', hand-wheel H, screw-sleeve K,

and the `shaft I, having gear-wheel U, the

screw J, the shaft I, the button L, adjustably f mounted on screw J, and stop devices, as shown l and described, on sleeve K, and button L, asV

set forth.

set forth.

forth.

9. The combination of yoke W, having the rib X', and provided with a pocket or recess, in which is mounted a truck carrying rollers, a spring arranged to exert a pressure on the truck, and a device to adjust the tension of the spring on the truck, and the rollers, substantially as shown and described.

10. rl`he combination of yoke W, having rib X' and recess X4, and the truck X, having rollers Z, arranged with a cam to take on the roller-truck, substantially as shown and described.

11. In an engine-lathe, the combination, with the saddle D' and the slide D2, of the saddle D, having swivel stem F5, the nut-gear having a bearing-stem for operation, substantially as shown and described, and for the purpose set 1 forth.

12. The compound rest-saddle D, having the circular base 6 G, arranged with an annular beveled recess in the under side, in which takes the annular rib or track D, formed on the face of the projecting hub of slide D", the threaded stem 5 F, and a nut gear-wheel arranged to take on the threaded stem, and devices for operating the gear-lint, all in combination, substantially as shown and described, and for the purpose set forth.

18. In an engine -lathe, the combination, with the apron E and the saddle D', of the feed-screw 2 B, having a gear-wheel, 7, the bevel-wheel 3, mounted on apron E, the connected bevel-Wheel 4, and gear-wheel 5, mounted revolubly on stud 15, and an intermediate gear-wheel mounted on an eccentric bearing, and devices whereby the intermediate gear- Wheel can be simultaneously thrown into gear 7, substantially as shown and described, and for the purpose set forth.

14. In an enginelathe, the combination, With the carriage-apron, of the shaft 9, having the disk 16, provided With the eccentric bearing-stud 10, the gear-Wheel 6, mounted on stud 10, the stop 17, and the adjustable stop 18 19, substantially as shown and described, and for the purpose set forth.

15. In an engine-lathe, the combination, with the carriage-apron, of an adjustable movable stop secured in frictional contact with the apron, a shifting stop rigidly mounted on a shaft, and a gear-Wheel mounted revolubly on an eccentric formed on the shaft, substantially as shown and described, and for the purpose vf set forth.

7. The disk Q of absorbent material mounted j in a cavity in worm-Wheel P surrounding shaft I, and covered by friction-disk S, substantially as shown and described, and for the purpose 16. In an engine-lathe, the combination, with the bed A, of the bracket-sleeve e, the sleeve d, mounted revolubly in the bracketsleeve, and having the annular rack d and an enlarged head, d3, and the pinion f, having the shaft f', handle g, and thumb-nut h, substantially as shown and described, and for the purpose set forth.

17. In an engine-lathe, the combination,

- with the bed A,of the telescopic-headed racked sleeve d, mounted revolublyr on the bracketscrew, the feed-rod b, having one end mounted to slide and turn with the headed sleeve, and the pinion f, operating to telescope the headed screw d on the feed-rod, substantially as shown and described, and for the purpose set forth.

18. In an engine-lathe, the combination, with the lathe-bed, of a bracket-sleeve, a headed sleeve having an annular rack mounted revolubly in the bracket-sleeve, and a pinion mounted in the bracket-sleeve to engage the annular rack, substantially as shown and described, Whereby the headed sleeve can be moved forward or backward, as set forth.

19. In an engine-lathe, the combination, with the head-stock, of the bearing-bushings B, having annular grooves b5, connected by spiral cross or reverse grooves B5, and provided with a cleaning-hole closed by a screwplug, B6, to retain the oil, substantially yas shown and described, and for the purpose set forth.

20. In an engine-lathe, the combination, with the head-stock, of a pivoted yoke, a knucklejoint bar, a shifting-screw, and a thumb-nut mounted on the shifting-screw, substantially as shown and described, and for the purpose set forth.

21. In an engine-lathe, the saddle D', having the pockets A, in combination with the head-stock B, and the foot-stock c, substantially as shown and described, and for the purpose set forth.

22. In an engine-lathe, the combination, with the head-stock having recess j, of the pivoted yoke p, having knuckle-recess 7c', bar js, the shifting-screw Z, provided with the le- IOO 'Ver-handle m, and thumb-nut n, substantially with the foot-stock C, having a vertical slot, as shown and described, and for the purpose C', and the spring-clamping jaw C 7, of the set forth. adjustable set-over slide C5, and the clump- 23. In an enginelathe, the offset foot-stock, screw C?, substantially as shown and described, 15 5 provided with an adjustable dovetailed setwhereby the set-over slide can be rigidly fastover slide, slotted transversely from its top to ened, as set forth. form a spring clamping-jaw to clamp the said dovetailed set-overslide,andaclampingscrew VICTOR H ERNST' for operation, substantially as shown and de- 1o scribed, and for the purpose set forth.

24. In au engine-lathe, the combination,

Witnesses:

EDGAR TME, J. L. MCAULIFFE. 

